# C1.Win.Calendar.C1CalendarView.SelectionChanging

## Content

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<h1 id="C1_Win_Calendar_C1CalendarView_SelectionChanging" data-uid="C1.Win.Calendar.C1CalendarView.SelectionChanging" class="text-break">SelectionChanging Event
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<div class="markdown level0 summary"><p>Occurs before the range of selected days will be changed.</p>
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<div class="markdown level0 conceptual"></div>
<h6><strong>Namespace</strong>: <a class="xref" href="C1.Win.Calendar.html">C1.Win.Calendar</a></h6>
<h6><strong>Assembly</strong>: C1.Win.Calendar.10.dll</h6>
<h5 id="C1_Win_Calendar_C1CalendarView_SelectionChanging_syntax">Syntax</h5>
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  <pre><code class="lang-csharp hljs">public event EventHandler&lt;DateChangingEventArgs&gt; SelectionChanging</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Event SelectionChanging As EventHandler(Of DateChangingEventArgs)</code></pre>
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<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
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      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.eventhandler-1">EventHandler</a>&lt;<a class="xref" href="C1.Win.Calendar.DateChangingEventArgs.html">DateChangingEventArgs</a>&gt;</td>
      <td>Occurs before the range of selected days will be changed.</td>
    </tr>
  </tbody>
</table>
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